Re: [PATCH 1/3] dt-bindings: mtd: Relax BCM4908 partition schema

[Rob Herring <robh@kernel.org>]

On Wed, Oct 09, 2024 at 02:50:44PM -0700, Sam Edwards wrote:
> The BCM4908 partition "parser" is really just a fixed partitions table,
> with a special partition compatible (`brcm,bcm4908-firmware`) that
> automatically labels the partition as "firmware" or "backup" depending
> on what CFE is communicating as the selected active partition.
> 
> The bcm4908-partitions schema is currently too restrictive, requiring
> that all child nodes use this special compatible or none at all. This
> not only contracits what is allowed by the "parser" but also causes
> warnings for an existing file ("bcm4908-asus-gt-ac5300.dts").
> 
> Modify the schema to be strict only for child partitions that use the
> -firmware compatible. Also update the child name regex to agree with
> fixed-partitions, so that these differences apply consistently.
> 
> Signed-off-by: Sam Edwards <CFSworks@gmail.com>
> ---
>  .../mtd/partitions/brcm,bcm4908-partitions.yaml | 17 +++++++++++------
>  1 file changed, 11 insertions(+), 6 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/mtd/partitions/brcm,bcm4908-partitions.yaml b/Documentation/devicetree/bindings/mtd/partitions/brcm,bcm4908-partitions.yaml
> index 94f0742b375c..aed37922a5fc 100644
> --- a/Documentation/devicetree/bindings/mtd/partitions/brcm,bcm4908-partitions.yaml
> +++ b/Documentation/devicetree/bindings/mtd/partitions/brcm,bcm4908-partitions.yaml
> @@ -30,12 +30,17 @@ properties:
>      enum: [ 1, 2 ]
>  
>  patternProperties:
> -  "^partition@[0-9a-f]+$":
> -    $ref: partition.yaml#
> -    properties:
> -      compatible:
> -        const: brcm,bcm4908-firmware
> -    unevaluatedProperties: false
> +  "^partition(-.+|@[0-9a-f]+)$":
> +    type: object
> +    if:
> +      properties:
> +        compatible:
> +          const: brcm,bcm4908-firmware

What schema applies to the node if this is not true? That needs to be 
addressed. You should be able to use oneOf here rather than if/then 
schema.

> +    then:
> +      $ref: partition.yaml#
> +      properties:
> +        compatible: true
> +      unevaluatedProperties: false
>  
>  required:
>    - "#address-cells"
> -- 
> 2.44.2
>